提交 7d4914db 编写于 作者: M Max Filippov 提交者: Al Viro

xtensa: fix prefetch in the raw_copy_to_user

'from' is the input buffer, it should be prefetched with prefetch, not
prefetchw.
Tested-by: NMax Filippov <jcmvbkbc@gmail.com>
Signed-off-by: NMax Filippov <jcmvbkbc@gmail.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
上级 3a0e75ad
......@@ -245,7 +245,7 @@ raw_copy_from_user(void *to, const void __user *from, unsigned long n)
static inline unsigned long
raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
prefetchw(from);
prefetch(from);
return __xtensa_copy_user((__force void *)to, from, n);
}
#define INLINE_COPY_FROM_USER
......
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